Specification:Brand: HaylouModel: GT1 ProApplication: Running,Sport,WorkingCable Length (m): 0mCompatible with: iPhone,iPod,Mobile phoneConnectivity: WirelessFrequency response: 20-20000HzImpedance: 32ohmsSensitivity: 110 dBCharging Time: 1.5hMusic Time: 3.5hStandby time: 300hBattery Type: Built-inBattery Capacity(mAh): earphone 43mAh, Box 800mAhHaylou GT1 Pro VS GT1 Major Difference Charging box: 800mAh vs Charging box: 310mAhMusic Time 26+H vs 12HStandby Time 300H vs 120HKey Features:Bluetooth 5.0 wireless earphones will give you stable transmission, fast speed transmitting, and low power consumption.The earbuds have 26 hours of battery life with charging dock to secure music with you. And 800mAh large battery capacity built-in the charging dock, providing you enough battery when you go out for a long journey.The charging case has a built-in battery display function. The case will display the real battery capacity of the earbuds through the indicator light.The dynamic driver is only 7.2mm. With AAC and high-polymer resin diaphragm, the built-in driver offers punchy bass, soft but clear mids and highs. Thanks to Hifi stereo, your calling would be like a face-to-face talk.Double touch either earbud to wake up the voice assistant. Support XiaoAi from Xiaomi, Siri and Google Assistant.Embedded Bluetooth chipset supports the DSP module to offset parts of noise. With the built-in NC system, GT1 Pro offers clear-talking while improving sound quality...